How to Sell to Costco as a Home Furnishing Supplier
To sell to Costco as a home furnishing supplier, you need a buyer first — Costco has no open online application, and non-food suppliers start by contacting its corporate office. Once a buyer says yes, five things decide whether the program lasts: vendor setup done right, EDI to Costco's specifications, packs and pallets built exactly as agreed, deliveries that arrive on their appointments with a matching ship notice, and every payment reconciled for deductions. Grow eCommerce has managed retailer accounts for home furnishing suppliers for more than 10 years, Costco among them.
If you already sell to Costco, you know the list
The buyer — your onboarding, compliance and relationship contact. Samples. The club-pack configuration and pallet build agreed with the buyer. Vendor setup and your vendor number. EDI to Costco's specifications, including advance ship notices. Labels on every carton and pallet. Depot delivery appointments. For Costco.com: drop-ship orders under Costco's terms, with packaging that survives parcel handling. Deductions for every miss, and a buyer who notices.
Every one of those is a place to lose margin or lose the program. Our team runs all of them for home furnishing suppliers. You keep the buyer relationship; we do the work behind it.
How selling to Costco actually works
There are two Costco businesses. The warehouses buy on purchase orders in club packs, delivered to regional depots on appointment; assortment is small and rotates, so a placement is a program, not a permanent listing. Costco.com runs separately, often on drop-ship: Costco.com sells the item, sends you the order, and you ship to the member under Costco.com's drop-ship terms. Both start with a buyer, both run on EDI to Costco's specifications, and both hold suppliers to shipment accuracy that setups built for other retailers routinely fail.
Three things decide your success: whether the product, pack and price fit what the buyer is building; whether every shipment matches its ASN and arrives on its appointment; and whether you keep the buyer informed before a problem becomes a deduction.
Everything we manage for you on Costco
Getting in and getting set up
- Positioning your line for the right buyer and region — product, price, club-pack configuration, sample preparation and follow-up
- Vendor setup and documentation, insurance certificates, and Costco.com's drop-ship terms
- EDI onboarding and testing to Costco's specifications, including advance ship notices, with full shipment hierarchy mapping
- GS1 setup: UPCs, GTINs, case and pallet labels
Item data and content
- Item setup to the buyer's and Costco.com's spec: attributes, dimensions and weights at every pack level, materials, assembly and care, compliance documents
- Costco.com content — titles, features, descriptions, images to spec, video where supported
- New items and program changes managed cleanly with the buyer
Purchase orders, shipping and inventory
- Warehouse POs acknowledged and built exactly to the specified club pack and pallet configuration; depot delivery appointments booked and kept
- ASN (856) transmitted before the shipment arrives and matching it exactly — the document Costco uses to schedule receiving
- Costco.com drop-ship orders fulfilled inside the required window with parcel-ready packaging and tracking; inventory kept accurate so the item stays sellable
- Traceability and lot documentation maintained where Costco requires it
Getting paid
- Every payment reconciled — deductions identified and matched to the PO and invoice; wrong deductions disputed with proof; short and missing payments chased
Returns and claims
- Member returns and damage claims handled to Costco's rules; return rate watched by item so a problem is fixed before the buyer flags it
Growing sales on Costco
- Sell-through and program performance reviewed with the buyer; next-program and new-item pitches prepared; seasonal and regional opportunities tracked
- Buyer relationships — more than 10 years of selling home furnishings into the major retailers
- One login on our platform to see what sold, what's live, and what we fixed
Why suppliers lose money on Costco
- 1
The pack is wrong. The buyer agrees the club pack and pallet build with you; deviate and it costs you.
- 2
The ASN doesn't match. A ship notice that does not match the load stalls receiving and costs you.
- 3
EDI built for another retailer. Costco's mapping is its own; setups that pass elsewhere fail Costco's testing.
- 4
Costco.com packaging fails in transit. Parcel damage becomes returns, deductions and a buyer conversation.
- 5
Nobody talks to the buyer. At Costco the buyer is the system; silence reads as a problem.
Proof
- $100M+ in online sales managed and helped produce for our clients
- 25+ home furnishing brands
- One factory: first-ever Amazon PO of $1.2M, then $8M the next year through Direct Import — the kind of buyer-driven relationship Costco programs are built on
Frequently asked questions
How do I sell on Costco.com as a furniture supplier?
Through a Costco buyer, the same way as the warehouses: Costco's vendor inquiries page sends non-food suppliers to its corporate office. Costco.com orders are often drop-shipped by the supplier under Costco's terms, so furniture needs packaging that survives delivery, accurate dimensions and weights, and inventory you can ship on time. We help position lines for the buyer and run everything after the yes.
How do I become a Costco vendor?
There's no open online application. Costco's vendor inquiries page sends non-food suppliers to its corporate office; food and sundry suppliers go to their division office. You present the product, price and pack, provide samples, and — if the buyer says yes — complete vendor setup, EDI testing and your first PO. We help position lines and run everything after the yes.
Is Costco.com separate from the warehouses?
They run differently. The warehouses buy club packs delivered to regional depots; Costco.com orders are often drop-shipped by the supplier under Costco's terms. Both start with the same vendor inquiry route.
Does Costco require EDI?
Yes for meaningful volume — EDI to Costco's own specifications, including an advance ship notice that matches the shipment.
What is a club pack?
The multi-unit pack built for the warehouse floor — quantity per pack, case and pallet build — as agreed with the buyer. Build it exactly as agreed.
Can Grow ECommerce run Costco for us if we already sell there?
Yes. We take over the EDI, shipment compliance, Costco.com fulfillment and deduction reconciliation, and keep your buyer informed.
Does Grow eCommerce need access to our Costco vendor accounts?
Yes. We work inside your existing Costco vendor accounts and EDI setup as an authorized user, so the account, the relationship and the data remain yours. We handle EDI, shipment compliance, Costco.com fulfillment and deductions; you review results in the GEC platform.
What does it cost to have Grow eCommerce manage Costco for us?
Monthly plans based on your active SKU count, plus a monthly commission on managed sales — 2%, 1.5% or 1%, one rate set by the month's total. Every plan is fully managed by our team. See /pricing for current plans or book a call for a quote.
Glossary
- Buyer
- Costco's category buyer; the primary contact for onboarding, orders and compliance
- Club pack
- the multi-unit pack and pallet configuration agreed with the Costco buyer
- Depot
- Costco's regional receiving warehouse for warehouse-program shipments
- Costco.com drop ship
- the separate program where suppliers ship Costco.com orders to members
- ASN
- advance ship notice; it must match the shipment
- Web ready / web complete
- GEC's terms: content set complete / live on every assigned retailer
Ready to take a line to Costco — or to run the account you already have?
Book a call. We'll tell you what the buyer will need to see, or take over the work behind the program you already have.